Answer in brief
CVE-2026-15249 records a Medium severity (CVSS 5.4) vulnerability in Patterns Kit <= 1.0.3 - Contributor+ Stored XSS via YouTube Popup Link. The current sources do not mark it as known exploited. The current feed maps Unknown/Patterns Kit (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 5.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Unknown/Patterns Kit (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/Patterns Kitgeneric | 0 | Not reported |
Published upstream
Aug 12, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Aug 26, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 12, 2026
The Patterns Kit WordPress plugin through 1.0.3 does not escape a link attribute before its client-side script inserts it into the page, allowing users with a role as low as Contributor to store a payload that executes in the browser of a user who views the content and clicks the affected element.
Quoted source text, attributed separately from HOL analysis.